Queries a Sun/Oracle Unified Storage appliance via SNMP. Acquires total space for a share and used. Does a quick calculation and sets the error level accordingly.

The MIB files referenced come off your storage appliance. Download that and any other needed MIB files into your default directory. The default MIB is often inadequate and assume RFC MIB files, which you may not have with a basic SNMP install. http://www.mibsearch.com/ is a good reference point for amy of those.